To provide an extendable actuator capable of inhibiting deflection of a ball screw and a drive device.SOLUTION: An extendable actuator includes: a housing including an attachment part attached to a support member; a first bearing supported by the housing; a ball screw including a screw shaft supported by the first bearing and a nut through which the screw shaft penetrates; a rod which is moved with the nut in an axial direction of the screw shaft by rotation of the screw shaft; a motor supported by the housing; and a speed reduction mechanism disposed between the motor and the screw shaft. The entire part of the first bearing is disposed at the opposite side of the attachment part with respect to the speed reduction mechanism.SELECTED DRAWING: Figure 4
【課題】ボールねじの撓みを抑制できる伸縮アクチュエータ及び駆動装置を提供すること。【解決手段】伸縮アクチュエータは、支持部材に取り付けられる取付部を備えるハウジングと、ハウジングに支持される第1軸受と、第1軸受に支持されるねじ軸及びねじ軸が貫通するナットを備えるボールねじと、ねじ軸の回転によってナットと共にねじ軸の軸方向に移動するロッドと、ハウジングに支持されるモータと、モータとねじ軸との間に配置される減速機構と、を備える。第1軸受の全ては、減速機構に対して取付部とは反対側に配置される。【選択図】図4
EXTENDABLE ACTUATOR AND DRIVE DEVICE
伸縮アクチュエータ及び駆動装置
2021-02-22
Patent
Electronic Resource
Japanese
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